Liquid Crystal Panel Dual-TFT Storage Electrode Common Voltage
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Solution Overview
Problem
Conventional liquid crystal panels face issues with display performance due to poor common voltage application, leading to residual or flicker problems, which are typically addressed through costly manual or automatic detection processes, reducing productivity.
Innovation Solution
A liquid crystal panel configuration with two thin film transistors (TFTs) and storage electrodes that apply and store grayscale driving signals, inverting polarity to balance the common voltage between frames, eliminating the need for manual or automatic detection processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual or automatic detection processes are used to ensure optimal common voltage, then display performance can be guaranteed, but manufacturing cost increases and productivity decreases
Solution Approach 1:
The liquid crystal panel performs self-detection and self-adjustment of common voltage through its built-in storage electrode and dual-TFT structure. The second TFT transfers grayscale voltage to the storage electrode, which then adjusts the common voltage automatically without requiring external detection equipment or manual intervention, thus maintaining reliability while improving productivity
2Reliability
If manual or automatic detection processes are used to ensure optimal common voltage, then display performance can be guaranteed, but manufacturing cost increases
Solution Approach 1:
The panel uses its own internal components (storage electrode, second TFT) to perform common voltage detection and adjustment, eliminating the need for external detection equipment and manual operations. This self-service mechanism reduces manufacturing costs while ensuring display performance through automatic common voltage optimization
Solution Approach 2:
The storage electrode and second TFT serve multiple functions: they not only maintain grayscale voltage during non-display periods but also detect and adjust common voltage automatically. This multi-functionality eliminates the need for separate detection systems, reducing manufacturing cost while ensuring display quality
Data Source
AI summary
A liquid crystal panel and the driving method thereof are disclosed. The liquid crystal panel includes at least one storage electrode, a plurality of scanning lines, a plurality of data lines, and a plurality of pixel areas. Each of the pixel areas includes a pixel electrode, a first TFT and a second TFT. The first TFT drives the corresponding pixel electrode. The gate of the second TFT connects with the previous scanning line, and one of the source and the drain of the second TFT connects to the corresponding pixel electrode within the pixel area, and the other one connects with the storage electrode. In this way, the optimal common voltage is applied to the liquid crystal panel when the liquid crystal panel is in a displaying process, and thus the display performance is guaranteed.